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A method of operating a medical device having a memory and a processor, wherein the memory is structured to store a number of operating routines, each of at least some of the number of operating routines being associated with a number of operating features of the medical device, and wherein the proc

A method of operating a medical device having a memory and a processor, wherein the memory is structured to store a number of operating routines, each of at least some of the number of operating routines being associated with a number of operating features of the medical device, and wherein the processor is adapted to execute a first one of the number of operating routines enabling a first set of operating features. The method comprises receiving an enablement code associated with a second operating routine, executing the second operating routing for a predetermined period responsive to receipt of the enablement code, wherein execution of the second operating routine enables a second set of operating features, and terminating execution of the second operating routine responsive to expiration of the predetermined period.

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1. A method of operating a medical device having a memory and a processor, the method comprising acts of: ab initio storing in the memory first and second pluralities of operating routines respectively associated with first and second operating features of the medical device to provide a therapy, th

1. A method of operating a medical device having a memory and a processor, the method comprising acts of: ab initio storing in the memory first and second pluralities of operating routines respectively associated with first and second operating features of the medical device to provide a therapy, the first and second plurality of operating routines being respectively associated with different modes of operation of the medical device;executing the first plurality of operating routines while maintaining the second plurality of operating routines disabled;receiving an enablement code indicating a predetermined period for permitting execution of the second plurality of operating routines by the medical device;executing the second plurality of operating routines for the predetermined period responsive to the receipt of the enablement code; anddisabling the execution of the second plurality of operating routines at expiration of the predetermined period. 2. The method of claim 1, further comprising acts of: suspending execution of the first plurality of operating routines while the second plurality of operating routines is being executed; andreinitiating execution of the first plurality of operating routines expiration of the predetermined period. 3. The method of claim 1, further comprising an act of verifying that the enablement code is authorized for use with the medical device. 4. The method of claim 1, wherein the enablement code comprises a trial enablement code and the predetermined period comprises a trial period. 5. The method of claim 1, wherein the enablement code comprises a subscription enablement code and the predetermined period comprises a subscription enablement period. 6. A method for enabling operating features of a medical device having a memory and a processor, the method comprising acts of: ab initio storing in the memory first and second pluralities of operating routines respectively associated with first and second operating features of the medical device to provide a therapy, the first and second plurality of operating routines are respectively associated with first and second modes of operation of the medical device;receiving information identifying the medical device;generating an enablement code associated with the identified medical device and one of the first and second modes, the enablement code having associated therewith a predetermined period for execution of the second operating features by the medical device;providing the enablement code to the identified medical device;executing the first operating features while maintaining the second operating features disabled;executing the second operating features for the predetermined period responsive to receipt of the enablement code, andterminating the execution of the second operating features at expiration of the predetermined period. 7. A method for operating a medical device, the medical device having a memory and a processor, the method comprising acts of: ab initio storing in the memory first and second pluralities of operating routines respectively associated with first and second operating features of the medical device to provide a therapy, the first and second plurality of operating routines being respectively associated with different modes of operation of the medical device;executing the first plurality of operating routines while maintaining the second plurality of operating routines disabled;receiving an enablement code indicating a predetermined period for permitting execution of the second plurality of operating routines by the medical device;executing enabling the second plurality of operating routines responsive to receiving the enablement code; anddisabling the execution of the second plurality of operating routines at expiration of the predetermined period. 8. The method of claim 7, further comprising acts of: disabling the first plurality of operating routines responsive to receiving the enablement code; andre-enabling the first plurality of operating routines expiration of the predetermined period. 9. The method of claim 7, wherein receiving an enablement code, comprises acts of: identifying the medical device; andgenerating an enablement code uniquely associated with the medical device and the second plurality of operating routines. 10. A medical device, comprising: memory to store ab initio first and second pluralities of operating routines respectively associated with first and second operating features of the medical device to provide a therapy, the first and second pluralities of operating routines being respectively associated with different modes of operation of the medical device;a processor adapted to execute the first plurality of operating routines while maintaining the second plurality of operating routines disabled, andthe second plurality of operating routines for duration of the predetermined period responsive to receipt of the enablement code; andan interface device adapted to communicate the enablement code to the processor, the enablement code triggering the processor to execute the second plurality of operating routines, the enablement code indicating the predetermined period for per min the execution of the second plurality of operating features by the medical device. 11. The medical device of claim 10, wherein the medical device is a positive pressure therapy device structured to generate a flow of positive pressure gas. 12. The medical device of claim 10, wherein the processor is adapted to disable the at least one operating feature of the first plurality of operating routines at expiration of the predetermined period. 13. The medical device of claim 10, wherein the processor is adapted to terminate execution of the second plurality of operating routines at expiration of the predetermined period. 14. The medical device of claim 10, wherein the processor is adapted to suspend execution of the first plurality of operating routines while executing the second plurality of operating routines and to reinitiate execution of the first plurality of operating routines at expiration of the predetermined period. 15. The medical device of claim 10, wherein the enablement code is one of a trial enablement code associated with a predetermined trial period and a subscription enablement code associated with a predetermined subscription period. 16. A medical device, comprising: a storage for storing ab initio first and second pluralities of operating routines, respectively associated with first and second operating features of the medical device to provide a therapy, the first and second pluralities of operating routines being respectively associated with different modes of operation of the medical device;a processor for executing the first plurality of operating routines while maintaining the second plurality of operating routines disabled, andenable execution of the second plurality of operating routines for duration of the predetermined period responsive to receipt of the enablement code; andan interface for communicating the enablement code to the processor, the enablement code triggering the processor to execute the second plurality of operating routines, the enablement code indicating the predetermined period for permitting the execution of the second plurality of operating features by the medical device. 17. The medical device of claim 16, wherein the medical device is a positive pressure therapy device structured to generate a flow of positive pressure gas. 18. The medical device of claim 16, wherein the processor is adapted to disable the at least one operating feature of the basic operating features at expiration of the predetermined period. 19. The medical device of claim 16, wherein the processor is adapted to terminate execution of the second plurality of operating routines at expiration of the predetermined period. 20. The medical device of claim 16, wherein the processor is adapted to suspend execution of the first plurality of operating routines while executing the second plurality of operating routines and to reinitiate execution of the first plurality of operating routines at expiration of the predetermined period.